Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>If you ned such kind of decoupling and separation of entities - you can create <a href="http://en.wikipedia.org/wiki/Data_transfer_object" rel="nofollow">DTO</a> object along with each business object and use DTO to communicate with Service. But if you have a lot of business entities consider an other approach to avoid maintenance hell.</p> <pre><code>public sealed class ExportProductDto { public(ProductForExport exportProduct) { // initialize fields this.ExportId = exportProduct.ExportId; } public int ExportId { get; private set; } } </code></pre> <p>BTW, An overkill solution with operator overload, use <a href="http://en.wikipedia.org/wiki/Adapter_pattern" rel="nofollow">Adapter pattern</a> to convert between product types</p> <p>To decouple adapting from entities itself implement following interface your self:</p> <pre><code>public interface IProductAdapter&lt;TImport, TExport&gt; { TImport ToImportProduct(TExport exportProduct); TExport ToExportProduct(TImport importProduct); } </code></pre> <p>Or an other adapter approach:</p> <pre><code>// Implement this interface for ProductForImport class // public class ProductForImport : IExportProductAdapter, Product public interface IExportProductAdapter { ProductForExport ToExportProduct(); } // Implement this interface for ProductForExport class // public class ProductForExport : IImportProductAdapter, Product public interface IImportProductAdapter { ProductForImport ToImportProduct(); } </code></pre> <p><strong>EDIT: Answer to comments</strong></p> <pre><code>// An example of IExportProductAdapter adapter implementation public sealed class ProductForImport : Product, IExportProductAdapter { public int ImportId { get; set; } public ProductForExport ToExportProduct() { ProductForExport p = new ProductForExport(); p.Id = this.Id; p.IsExportable = true; p.ExportId = 0; return p; } } </code></pre> <p>And then instead of:</p> <pre><code> ProductForExport pfe2 = (ProductForExport)pfi; </code></pre> <p>You can do:</p> <pre><code> ProductForExport pfe2 = pfi.ToExportProduct(); </code></pre>
    singulars
    1. This table or related slice is empty.
    1. POImplicit conversion between types in C#
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USsll
    1. USsll
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. POImplicit conversion between types in C#
      singulars
      1. PTQuestion
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTAcceptedByOriginator
    2. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    1. COThis Adapter-pattern way seems really interesting, thank you for mentioning. Could you please get in more detail how to rewrite the original implementation this way?
      singulars
      1. PO
      1. USbalint
    2. CO@balint : see EDIT part of my answer
      singulars
      1. PO
      1. USsll
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload